The GF-T4-480 from A-Info is a Power Divider with Frequency 400 MHz to 8 GHz, Insertion Loss 0.9
2 dB, Isolation 15 to 19 dB, Amplitude Balance ±0.2 to 0.4 dB, Phase Balance ±2 to 4 Degree. Tags: Module with Connectors. More details for GF-T4-480 can be seen below.